The only real Advantage i see of the 580, ONLY if you get the 3GB version. 570 could be OCed to 580 performance, so there is no point of upgrade...UNLESS! You have multiple monitors to run at high res so the full memory could be utilized, OR, you work with video editing apps like After Effects or Premiere, that can utilize GPU Acceleration and greatly improve your editing performance with more GPU RAM! Otherwise, save the half K and put it for some better use down the road!

If you want a 580 3gb why not just add another 570, it would definately outperform the single 580 hands down.

580 standard or 3gb, the difference was meant for multi-monitor super high res where the extra memory is used effectively, overclock that bad boy, worse comes to worse, you obviously have the coin to get a better card, so why not try and get the most you can out of it to begin with?

A 570 can handle anything out there even at 2560 reso on a single monitor, games like BF3 which are very taxing, play very well with the lesser cards, the 570 580 just allow higher res/more eye candy and higher minimum/average fps, the screen size doesnt matter its the settings/resolution you use.

I do not think it is $ well spent, if you want better wait a couple months for the 600 series to come out, then upgrade it, or go balls to the wall and get a 590 if you really want a uber card.

Basically one of my PCs require a new card and the other one has a 8800GTS in it.
Currently my PC has the GTX 570, pc 2 8800GTS, pc 3 gfx broken
I want to put my GTX570 in pc 2 and put the 8800gts in pc 3
Therefore I want a New GPU.

Do you guys think that I should stick with the GTX570 and Upgrade pc 2 with something like a 560GTX?

How does one go about overclocking the 570GTX? I have no experience in overclocking at all, that's why I buy something new.

Yeah, unless you're a max settings only kind of nut, the 570 will play every game while looking amazing. A single 570 will have trouble with BF 3, metro 2033, AVP, Crysis 2 (dx 11 patch) maxed out.. but off the top of my head I can't think of any other games that will struggle. Still, you can play all games at pretty damn high settings.

The GTX 580 is a waste of money unless you're a hardcore gamer who demands the best and doesn't care about price (and has lots of disposable income). You can get the 560 Ti in a version with extra vram and go SLI for better performance/price. If you decide that you don't need max everything for your main, just upgrade your old computer to a new card :)

Alternatively, you could always see how the red team is doing these days with CF 6950s 2GB version.